METHOD OF REDUCING POWER CONSUMPTION OF SENSOR UNITS IN A WIRELESS SENSOR NETWORK Russian patent published in 2019 - IPC H04W84/18 

FIELD: wireless sensor networks.

SUBSTANCE: wireless sensor network is logically divided into k functionally separate wireless sensor local networks, which operate on their own local frequency channel. Sensor units operate in low power mode, receive power from the battery and periodically switch on the receiver for the awakening message detection. One or more wireless sensor local area networks are assigned to one of n wireless repeaters, which operate on a retransmitting frequency channel, continuously use power to the receiver and transmitter and provide, at an arbitrary moment in time, two-way communication between the central server and the wireless sensor local area networks. Wireless transponders briefly change the frequency relay channel to a local frequency channel of a specific wireless sensor local network when it wakes up. During transition of wireless sensor local network into active mode, local frequency channel is changed to frequency channel of retransmission.

EFFECT: reduced power consumption of sensor units in a wireless sensor network.

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